CBSE Class 12-science Answered
why an ordinary moving coil ammeter used for dc cannot be used to measure alternating current ?
Asked by Topperlearning User | 22 Jun, 2015, 11:23: AM
Expert Answer
Alternating current changes in magnitude and direction and the mean value of ac over a complete cycle is zero. Therefore moving coil ammeter will always read zero when connected in an ac circuit of any frequency.
Answered by | 22 Jun, 2015, 01:23: PM
Concept Videos
-
AC Applied Across Resistor - Part 1
This video describes simple AC and DC circuits and advantages of AC circuit... -
Alternating EMFs
This video explains alternating emf connected to a resistor, finding curren... -
AC Applied Across Resistor - Exam Decoded
This video contains practice questions on AC voltage applied to a resistor.
CBSE 12-science - Physics
Asked by Selebagbi | 14 Dec, 2019, 09:35: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 08:42: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 08:43: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 08:48: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 08:53: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 08:58: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 08:59: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 09:00: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 09:07: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 09:12: AM
ANSWERED BY EXPERT
